CAJ | 학술논문

对国内、外优秀女子铁饼运动员掷铁饼动作的运动学参数进行测量、比较与分析。结果显示：1）我国2名优秀女子运动员在出手速度上不存在劣势，然而，在出手速度、出手角一度与出手高度三者组合的优化程度上不如国外优秀运动员；2）李艳凤在第1单支撑和第2单支撑阶段时间较短，谭建在第2双支撑阶段的时间较短；3）我国2名运动员在第2单支撑阶段铁饼增速较多，在第2双支撑阶段铁饼增速较少，这对出手速度有一定程度的影响；4）我国2名运动员在第2双支撑阶段人体重心速度下降较少，在一定程度上反映了“人一饼”系统内能量传递效率较低，这与第1双支撑阶段人体重心速度增量较少有一定关系；5）我国2名运动员在第1双支撑与腾空阶段中，铁饼移动距离较长，体现了大幅度摆饼的特点；6）国外优秀运动员在掷铁饼动作中，人体的平动范围较大，特别是在两个双支撑阶段，这有利于提高第1单支撑阶段的人体重心速度的增加，也有利于在第2双支撑阶段为最后用力动作做好充分的准备。
대국내、외우수녀자철병운동원척철병동작적운동학삼수진행측량、비교여분석。결과현시：1）아국2명우수녀자운동원재출수속도상불존재열세，연이，재출수속도、출수각일도여출수고도삼자조합적우화정도상불여국외우수운동원；2）리염봉재제1단지탱화제2단지탱계단시간교단，담건재제2쌍지탱계단적시간교단；3）아국2명운동원재제2단지탱계단철병증속교다，재제2쌍지탱계단철병증속교소，저대출수속도유일정정도적영향；4）아국2명운동원재제2쌍지탱계단인체중심속도하강교소，재일정정도상반영료“인일병”계통내능량전체효솔교저，저여제1쌍지탱계단인체중심속도증량교소유일정관계；5）아국2명운동원재제1쌍지탱여등공계단중，철병이동거리교장，체현료대폭도파병적특점；6）국외우수운동원재척철병동작중，인체적평동범위교대，특별시재량개쌍지탱계단，저유리우제고제1단지탱계단적인체중심속도적증가，야유리우재제2쌍지탱계단위최후용력동작주호충분적준비。
This paper makes a direct comparison of kinematic features of discus throwing tech- nique between domestic women elite discus thrower and overseas. The results are as follows.. 1） the two domestic athlete~ s release velocity does not have disadvantages, however, the opti- mizing combination of release velocity, release angle and release height is not as good as the o- verseas elite athletes~2） the time spent on the first single and second double support phase is both relatively short to LI Yan-feng, so is the time spent on the first single support phase to TAN Jian; 3） the discus velocity is increased much in the second single support phase, and in- creased less in the second double support phase, that are not good to get larger release velocity for the two domestic athletes; 4） fewer decrement of the two domestic athlete ＇ s center of gravity （CG） velocity in the second double support phase, to some extent, means that the ener- gy transfer efficiency in ＂body-discus＂ system is lower. This may be due to their fewer decre- ment of CG velocity in the first double support phase; 5） discus distance of the two domestic athletes in the first double support and air phase are much larger, which they have a character- istic of swaying discus in a large range; 6） much larger translational motion range of overseas elite athletes, especially in the two double support phase, is beneficial to increase the CG veloci- ty in the first single support phase, and make sufficient preparation for final explosive action in the second double support phase.